import { extend } from "../2.base";
import { replaceAll } from "../func";

let i18nStore = {};
const i18nFormatters = {};

export function changeI18n(i18n) {
    if (i18n) {
        i18nStore = i18n;
    }
}

export function addI18n(i18n) {
    extend(i18nStore, i18n);
}

export function i18nText(key) {
    let localeText = i18nStore[key] || (BI.i18n && BI.i18n[key]) || "";
    if (!localeText) {
        localeText = key;
    }
    const len = arguments.length;
    if (len > 1) {
        if (localeText.indexOf("{R1") > -1) {
            for (let i = 1; i < len; i++) {
                const reg = new RegExp(`{R${i},(.*?)}`, "g");

                const result = reg.exec(localeText);

                if (result) {
                    const formatName = result[1];
                    localeText = replaceAll(localeText, reg, i18nFormatters[formatName](key, arguments[i]));
                } else {
                    localeText = replaceAll(localeText, `{R${i}}`, `${arguments[i]}`);
                }
            }
        } else {
            const args = Array.prototype.slice.call(arguments);
            let count = 1;
            
            return replaceAll(localeText, "\\{\\s*\\}", () => `${args[count++]}`);
        }
    }
    
    return localeText;
}

export function addI18nFormatter(formatName, fn) {
    i18nFormatters[formatName] = fn;
}